John Regan Five Cent Pamphlets

This series of small pamphlets contains a mix of fiction and non-fiction, published circa 1900. The series has no official title printed on the pamphlets, but each is numbered. Much (possibly all) of the content is identical to that found in the Multum in Parvo Library produced in the 1890's by multiple publishers, but the "Multum in Parvo" name is not found on these versions. The publisher of these editions is presumed to be John Regan of Chicago based on advertising found within the pamphlets.